Glue outlet structure of hot melt glue gun and hot melt glue gun

Abstract

The invention belongs to the technical field of gluing tools, and particularly relates to a glue outlet structure of a hot melt glue gun and the hot melt glue gun. The glue discharging structure of the hot melt glue gun comprises a support, a driving key capable of being pressed and a transmission structure. The transmission structure comprises a connecting piece, a first transmission shaft, a second transmission shaft, a pushing assembly and a first elastic piece, the connecting piece is connected to the driving key and can reciprocate in the extending direction of the glue stick, the first end of the first transmission shaft is hinged to the connecting piece, and the second end of the first transmission shaft is rotationally connected with the support; the first end of the second transmission shaft is hinged to the driving key, the second end of the second transmission shaft is hinged to the pushing assembly, the pushing assembly is connected with the support through the first elastic piece and used for pushing the glue stick to move, and when the glue stick moves in the glue outlet direction, the first elastic piece is stretched. By using the glue discharging structure of the hot melt glue gun in the technical scheme, the glue discharging efficiency can be effectively improved, and the use experience feeling of a user is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of gluing tools, and particularly relates to a glue discharging structure of a hot melt glue gun and the hot melt glue gun. BACKGROUND

[0002] The hot melt glue gun is a kind of efficient and convenient bonding tool. Its working principle is that solid glue sticks are melted into a flowing state through electric energy or gas heating, and then liquid glue is precisely extruded by means of a pressure mechanism, and rapid bonding is realized after cooling and solidification. This tool has important value in many industry fields due to its instant solidification, non-toxicity, environmental protection and wide applicability: it realizes fine bonding in handcraft, completes rapid box sealing in the packaging industry, fixes precise components in the manufacture of electronic appliances, fills gaps in the field of building decoration, implements emergency repair in industrial maintenance, and even has specific applications in the field of medical health.

[0003] The mainstream manual glue gun on the current market generally adopts a mechanical design of single-shaft linear driving combined with a ratchet mechanism. Although this traditional structure is simple and reliable, it exposes a series of technical bottlenecks in actual use. The core problem is that the pushing system only relies on single-axis pressure to drive the glue stick to move. This linear pushing method has obvious mechanical energy loss, resulting in that the output efficiency of glue per stroke is less than 60% of the rated value. Users often need to repeat the pushing for 5-7 times to meet the basic bonding requirements, which seriously affects the operation continuity. The more prominent ergonomics problem is that the operator needs to continuously exert axial force to maintain normal glue discharge. This high-intensity operation will cause the user to have obvious hand muscle fatigue in a short time. The instability in the force exertion process will directly lead to the fluctuation of the glue discharge rate. The actual measurement data shows that the glue discharge uniformity deviation is as high as ±25% when manually operated. This fluctuation will form obvious nodal accumulation or intermittent glue shortage in the glue joint. In the continuous operation scene, these problems will be further magnified. For example, in the packaging assembly line, the traditional glue gun will prolong the box sealing time of a single product and seriously reduce the glue joint airtightness qualification rate. These inherent defects not only restrict the improvement of production efficiency, but also pose a systematic risk to the bonding quality. Especially in the fields of automobile interior assembly and precise electronic packaging, which have strict requirements on the quality of glue joints, the traditional glue gun has been difficult to meet the standard requirements of industrial production.

[0004] In view of this technical predicament, the industry urgently needs to develop a glue discharging structure of a hot melt glue gun and the hot melt glue gun with high-efficiency glue discharging characteristics. This equipment should break through the mechanical limitations of traditional single-axis driving, realize the increase of glue output per stroke, reduce the operation intensity and ensure the stability of glue discharge, so as to meet the dual requirements of efficiency and quality of modern production. SUMMARY

[0005] The object of the present application is to at least solve the problem of how to improve the efficiency of glue output. The object is achieved by the following technical solutions:

[0006] The first aspect of the present application proposes a glue output structure of a hot melt glue gun, comprising:

[0007] A support;

[0008] A pressable driving button;

[0009] A transmission structure, the transmission structure comprising a connecting piece, a first transmission shaft, a second transmission shaft, a pushing assembly and a first elastic piece, the connecting piece being connected to the driving button and being able to move back and forth along the extension direction of the glue stick, the first end of the first transmission shaft being hinged to the connecting piece, the second end of the first transmission shaft being rotationally connected to the support, the first end of the second transmission shaft being hinged to the driving button, the second end of the second transmission shaft being hinged to the pushing assembly, the pushing assembly being connected to the support through the first elastic piece, the pushing assembly being used to push the glue stick to move, the first elastic piece being stretched when the glue stick moves to the glue output direction.

[0010] The glue output structure of the hot melt glue gun proposed by the technical solution adopts a mechanical transmission and elastic energy storage cooperative driving structure, which fundamentally solves the problem of low efficiency and laborious operation of the traditional single-axis propulsion system. Its core working principle is based on the precise cooperation of double-hinged shaft transmission and first elastic piece energy storage mechanism, realizing efficient and stable propulsion of the glue stick. Specifically, when the user presses the driving button, the driving button moves axially along the mounting port, driving the first transmission shaft and the second transmission shaft to move together. The first transmission shaft rotates with the second end as the fulcrum, while its first end pushes the connecting piece to move towards the glue outlet. In this process, the second transmission shaft synchronously drives the pushing assembly to move forward, making the glue stick stably transport to the heating cavity. At the same time, the first elastic piece is stretched due to the displacement of the pushing assembly, storing elastic potential energy. After the glue stick is heated and melted, the molten glue is uniformly extruded from the nozzle under the action of continuous pressure, ensuring the continuity and consistency of the glue joint.

[0011] When the user releases the driving button, the system enters the reset stage. At this time, the first elastic piece releases the stored potential energy, quickly pulling the pushing assembly back to the initial position. At the same time, the reverse movement of the second transmission shaft drives the first transmission shaft to reset, making the driving button return to the standby state, completing a complete working cycle. This design of double-axis linkage combined with elastic energy storage makes the propulsion process of the glue stick more stable, avoiding the glue output fluctuation problem caused by intermittent force of the traditional single-axis ratchet mechanism. Experimental data shows that, under the same pressing stroke, the glue output of this structure is greatly improved compared with the traditional glue gun, and the required operating force is significantly reduced, significantly reducing the hand fatigue of the user.

[0012] Compared with the prior art, the scheme has three core advantages: (1) high output - through the optimization of the transmission ratio and the energy storage assistance of the first elastic member, the adhesive extrusion efficiency per stroke is greatly improved, and most of the bonding needs can be met by single pressing, reducing repeated operations; (2) shorten the reset time - the elasticity of the first elastic member makes the button quickly return to its original position, reducing the waiting time and suitable for high-frequency operation scenarios; (3) uniform glue output - the buffering effect of the first elastic member makes the glue stick advance more smoothly, effectively reducing the uniformity deviation of the glue output, and effectively avoiding the glue joint breakage or accumulation phenomenon.

[0013] The design is particularly suitable for high-precision and high-throughput bonding scenarios, such as electronic component packaging, medical device assembly, and automated packaging assembly lines, which have strict requirements on glue joint quality and operation efficiency. Its smooth human-computer interaction experience and stable glue output performance not only improve the construction efficiency, but also significantly reduce the labor intensity of the operator, representing an important breakthrough in the direction of high efficiency and humanization of hot melt glue gun technology. By further optimizing the material strength and the parameters of the first elastic member, the mechanism can also be adapted to higher viscosity glue sticks or industrial-grade high-strength bonding needs, and has broad market application prospects.

[0014] In addition, the glue output structure of the hot melt glue gun of the present application can also have the following additional technical features:

[0015] In some embodiments of the present application, the pushing assembly includes a guide and a push block, the push block is hinged to the second transmission shaft, the guide is connected to the first elastic member and the bracket, the guide is provided with a channel allowing the glue stick to pass through, the guide is provided with a avoiding opening, the avoiding opening is in communication with the channel, the push block extends into the channel through the avoiding opening and is hinged to the guide, and the push block can contact and push the glue stick to move in the glue output direction.

[0016] In some embodiments of the present application, the inner side of the bracket is provided with a first support plate, and the two sides of the guide are located on the first support plate, and the guide can reciprocate along the extension direction of the first support plate.

[0017] In some embodiments of the present application, the bracket is connected with a first connecting shaft, the first transmission shaft is hinged to the first connecting shaft, and the end of the first elastic member away from the pushing assembly is connected to the first connecting shaft.

[0018] In some embodiments of the present application, the first connecting shaft is provided with a spacer, and the first elastic member and the first transmission shaft are located on the two sides of the spacer, respectively.

[0019] In some embodiments of the present application, the first elastic member is provided with a first connecting ring and a second connecting ring, the first connecting ring is sleeved on the first connecting shaft, and the guiding member is provided with a connecting portion on one side thereof facing the first elastic member, and the second connecting ring is sleeved on the connecting portion.

[0020] In some embodiments of the present application, the bottom of the driving button is provided with a second elastic member, the support is provided with a second support plate, the bottom of the second elastic member abuts against the second support plate, and the top of the second elastic member abuts against the bottom of the driving button.

[0021] In some embodiments of the present application, the bottom of the driving button is provided with a clamping portion, the clamping portion comprises two protrusions arranged oppositely, and the connecting member is located between the two protrusions and can move relative to the protrusions.

[0022] In some embodiments of the present application, the glue discharging structure of the hot melt glue gun further comprises a housing, the support and the transmission structure are arranged inside the housing, the housing is provided with a battery compartment, one end of the housing is provided with a glue stick insertion port and an opening of the battery compartment, the other end of the housing is provided with a glue stick outlet, and the center line of the glue stick outlet is in the same straight line with the center line of the glue stick insertion port or the opening of the battery compartment.

[0023] In a second aspect of the present application, a hot melt glue gun is provided, which comprises the glue discharging structure of the hot melt glue gun as described above. BRIEF DESCRIPTION OF DRAWINGS

[0024] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a better understanding of the preferred embodiments, and are not to be considered as limiting of the application. Moreover, in the drawings, like reference numerals refer to similar components throughout the several views. In the drawings:

[0025] Figure 1 A structural schematic diagram of a hot melt glue gun according to an embodiment of the present application is schematically shown;

[0026] Figure 2 A partial structural schematic diagram of a hot melt glue gun according to an embodiment of the present application is schematically shown;

[0027] Figure 3 An exploded structural schematic diagram of a glue discharging structure of a hot melt glue gun according to an embodiment of the present application is schematically shown;

[0028] Figure 4 A partial structural schematic diagram of a glue discharging structure of a hot melt glue gun according to an embodiment of the present application is schematically shown;

[0029] Figure 5 A structural schematic diagram of driving a key is shown schematically according to an embodiment of the present application.

[0030] The signs in the drawings represent as follows:

[0031] 100, support; 110, first support plate; 120, second support plate; 121, positioning groove; 130, battery compartment;

[0032] 200, driving key; 210, clamping part; 220, cavity; 230, positioning protrusion;

[0033] 300, transmission structure; 310, connecting piece; 320, first transmission shaft; 330, second transmission shaft; 340, pushing assembly; 341, guide piece; 3411, connecting part; 3412, sleeving part; 3413, bending part; 342, pushing block; 350, first elastic piece; 351, first connecting ring; 352, second connecting ring; 360, first connecting shaft; 370, second connecting shaft; 380, spacer;

[0034] 400, glue stick; 500, battery; 600, shell; 610, glue stick insertion port; 620, battery compartment; 630, glue stick outlet; 700, second elastic piece. DETAILED DESCRIPTION

[0035] Exemplary embodiments of the present disclosure will be described in detail with reference to the drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0036] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described, unless specifically indicated as such. It is also to be understood that additional or alternative steps can be employed.

[0037] Although the terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first", "second", and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0038] Spatially relative terms, such as "inner", "outer", "inward", "outward", "lower", "bottom", "top", "upper", and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Such spatially relative terms can be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0039] Figure 1 A structural schematic diagram of a hot melt glue gun according to an embodiment of the present application is schematically shown.

[0040] Figure 2 A partial structural schematic diagram of a hot melt glue gun according to an embodiment of the present application is schematically shown. Figure 3 An exploded structural schematic diagram of a glue discharging structure of a hot melt glue gun according to an embodiment of the present application is schematically shown. As Figures 1 to 3As shown, the present application provides a glue outlet structure of hot melt glue gun, comprising a support 100, a pressable driving button 200 and a transmission structure 300; the transmission structure 300 comprises a connecting piece 310, a first transmission shaft 320, a second transmission shaft 330, a pushing assembly 340 and a first elastic member 350, the connecting piece 310 is connected to the driving button 200 and can reciprocate along the extension direction of the glue stick 400, the first end of the first transmission shaft 320 is hinged to the connecting piece 310, the second end of the first transmission shaft 320 is rotationally connected to the support 100, the first end of the second transmission shaft 330 is hinged to the driving button 200, the second end of the second transmission shaft 330 is hinged to the pushing assembly 340, the pushing assembly 340 is connected to the support 100 through the first elastic member 350, and the pushing assembly 340 is used to push the glue stick 400 to move, and the first elastic member 350 is stretched when the glue stick 400 moves to the glue outlet direction.

[0041] The glue outlet structure of hot melt glue gun provided by the technical solution adopts a mechanical transmission and elastic energy storage cooperative driving structure, which fundamentally solves the problems of low efficiency and laborious operation of the traditional single-axis propulsion system. The core working principle is based on the precise cooperation of double-hinged shaft transmission and elastic energy storage mechanism, which realizes the efficient and stable propulsion of the glue stick 400. Specifically, when the user presses the driving button 200, the driving button 200 moves axially along the mounting port, driving the first transmission shaft 320 and the second transmission shaft 330 to move together. The first transmission shaft 320 rotates with the second end as the fulcrum, and its first end pushes the connecting piece 310 to move to the glue outlet direction. In this process, the second transmission shaft 330 synchronously drives the pushing assembly 340 to move forward, so that the glue stick 400 is stably transported to the heating cavity. At the same time, the first elastic member 350 is stretched due to the displacement of the pushing assembly 340, storing elastic potential energy. After the glue stick 400 is heated and melted, the molten glue is uniformly extruded from the nozzle under the action of continuous pressure, ensuring the continuity and consistency of the glue joint. When the user releases the driving button 200, the system enters the reset stage. At this time, the first elastic member 350 releases the stored potential energy, quickly pulling the pushing assembly 340 back to the initial position. At the same time, the reverse movement of the second transmission shaft 330 drives the first transmission shaft 320 to reset, so that the driving button 200 returns to the standby state, completing a complete working cycle. This design of double-shaft linkage combined with elastic energy storage makes the propulsion process of the glue stick 400 more stable, avoiding the glue outlet fluctuation problem caused by intermittent force of the traditional single-axis ratchet mechanism. Experimental data shows that the glue outlet amount of this structure is greatly improved compared with the traditional glue gun under the same pressing stroke, and the required operating force is significantly reduced, significantly reducing the hand fatigue of the user.

[0042] Compared with the prior art, the scheme has three core advantages: (1) high output - by optimizing the transmission ratio and the first elastic member energy storage assistance, the adhesive extrusion efficiency per stroke is greatly improved, and a single press can meet most bonding needs, reducing repeated operations; (2) shorten the reset time - the elasticity of the first elastic member makes the button quickly return to its original position, reducing waiting time and suitable for high-frequency operation scenarios; (3) uniform glue output - the buffering effect of the first elastic member makes the glue stick 400 advance more smoothly, effectively reducing the uniformity deviation of the glue output, effectively avoiding the phenomenon of glue joint breakage or accumulation.

[0043] This design is particularly suitable for high-precision and high-throughput bonding scenarios, such as electronic component packaging, medical device assembly, and automated packaging assembly lines, etc. The smooth human-computer interaction experience and stable glue output performance not only improve the construction efficiency, but also significantly reduce the labor intensity of the operator, representing an important breakthrough in the direction of high efficiency and humanization of hot melt glue gun technology. By further optimizing the material strength and the first elastic member parameters, this mechanism can also be adapted to higher viscosity glue sticks 400 or industrial-grade high-strength bonding needs, with broad market application prospects.

[0044] Further, the glue output structure of the hot melt glue gun further comprises a shell 600, the support 100 and the transmission structure 300 are arranged inside the shell 600, the drive button 200 is movably arranged in the shell 600, the shell 600 is provided with a battery compartment 130, one end of the shell 600 is provided with a glue stick insertion port 610 and an opening of the battery compartment 130, the other end of the shell 600 is provided with a glue stick outlet 630, and the center line of the glue stick outlet 630 and the glue stick insertion port 610 or the opening of the battery compartment 130 are on the same straight line.

[0045] Optionally, the shell 600 is made of high-strength engineering plastic or lightweight metal material, and is tightly connected with the internal support 100 through buckle or screw fixing mode. The design of the shell 600 not only enhances the impact resistance of the overall structure, but also effectively resists external damage such as falling and collision during daily use, thereby greatly prolonging the service life of the equipment. In addition, the surface of the shell 600 can be treated with anti-slip texture or coated with a soft rubber layer to improve the grip comfort and reduce hand fatigue during long-time operation.

[0046] Optionally, the battery compartment 130 is located at the tail of the shell 600, adopting a rear-end opening design, which is convenient for users to quickly install and replace the battery 500. This plug-in connection method not only has simple operation, but also ensures the stable connection between the battery 500 and the support 100, avoiding poor contact caused by vibration or movement during use. The battery compartment 130 is usually provided with a guide groove or buckle structure inside, which can accurately position the position of the battery 500, prevent the battery from being inserted in reverse, and improve the safety and reliability of use. In addition, the battery 500 is preferably a rechargeable secondary battery 500 (such as a lithium-ion battery), which is not only environmentally friendly and economical, but also does not need to be frequently purchased by users, but only needs to be repeatedly used through charging, which greatly reduces the long-term use cost. The secondary battery 500 usually has high energy density and long cycle life, which can meet the endurance requirements of the hot melt glue gun during high-power work.

[0047] Optionally, the pressing direction of the driving button 200 is perpendicular to the insertion direction of the glue stick 400, so as to better transmit the force to other components. On the optimized layout of the shell 600, the reasonable arrangement of the power switch (not shown in the figure) is specially designed. The power switch is directly integrated on the shell 600 and connected with the internal circuit system. The user only needs to press the switch to connect the battery 500 and the heating component, so that the glue stick 400 can be quickly heated to a molten state. Considering the convenience of human-computer interaction, the power switch can be flexibly arranged on the left or right side of the shell 600, while the driving button 200 is usually arranged on the opposite side to meet the ergonomic design and avoid accidental touch. For example, for right-handed users, the power switch can be located on the left side and the driving button 200 on the right side, so that the thumb naturally presses the switch and the index finger or middle finger operates the driving button 200, realizing efficient single-handed control. Of course, according to actual needs, the power switch and the driving button 200 can also be arranged on the same side, and the specific position can be optimized and adjusted according to the spatial distribution of the internal battery 500, transmission mechanism and heating component, to ensure the compactness of the overall structure and the convenience of operation.

[0048] Optionally, the connecting piece 310 in this scheme adopts a strip-shaped block structure, and its vertical section is designed in a waist shape. This streamlined structure can not only ensure sufficient mechanical strength, but also effectively reduce the overall weight. The main body of the connecting piece 310 extends in the advancing direction of the glue stick 400, and two mounting holes are arranged on the surface thereof at intervals, which are used to realize the hinged cooperation with the transmission shaft. Specifically, the end of the first transmission shaft 320 hinged with the connecting piece 310 adopts a horizontal bending process to form an extension, which is precisely inserted into the first mounting hole in a clearance fit manner. This not only ensures the effective transmission of axial force, but also allows the connecting piece 310 to produce a slight swing when stressed, thereby adapting to the dynamic changes in the advancing process of the glue stick 400. Similarly, the second transmission shaft 330 is also inserted into the second mounting hole through the horizontal bending extension to form a stable rotary pair structure. The symmetrical layout of the double-hinged points makes the distribution of transmission force more balanced, and completely avoids the unbalanced load jamming problem easily occurred in the traditional single-shaft structure.

[0049] Further, Figure 4 Part of the structure of the glue outlet structure of the hot melt glue gun according to the embodiment of the present application is schematically shown. Referring to Figures 2 to 4 The pushing assembly 340 includes a guide piece 341 and a pushing block 342, the pushing block 342 is hinged with the second transmission shaft 330, the guide piece 341 is connected with the bracket 100 through the first elastic member 350, the guide piece 341 is provided with a channel allowing the glue stick 400 to pass through, the guide piece 341 is provided with a clearance, the clearance is communicated with the channel, the pushing block 342 extends into the channel through the clearance and is hinged with the guide piece 341, and the pushing block 342 can contact and push the glue stick 400 to move in the glue outlet direction.

[0050] The guide piece 341 can limit the moving direction of the pushing block 342 to be the extending direction of the glue stick 400, so that after the pushing block 342 contacts the glue stick 400, the pushing block 342 can push the glue stick 400 to move in the direction of the glue outlet. Optionally, the connecting part 3411 is in a cuboid structure, and the clearance is arranged at the center position of the connecting part 3411, so that the pushing block 342 can accurately extend into the channel and contact the glue stick 400. The sleeving part 3412 is located at the bottom of the connecting part 3411 and is designed in a circular arc shape, which is closely matched with the cylindrical shape of the glue stick 400, so as to ensure that the glue stick 400 remains stable during movement and avoids deviation or slipping due to uneven stress. This structure not only improves the guiding accuracy of the glue stick 400, but also reduces the friction resistance, so that the advancing process is more smooth.

[0051] The push block 342 is provided with a protrusion structure on one side of the glue stick 400. The protrusions are embedded in the surface of the glue stick 400 when the push block 342 contacts the glue stick 400, significantly increasing the friction between the two. Compared with the traditional smooth contact surface, the protrusion design can more effectively transmit the pushing force and prevent the glue stick 400 from slipping during the pushing process, thereby improving the glue output efficiency. In addition, the arrangement of the protrusions can be adjusted according to the material of the glue stick 400 to adapt to glue sticks 400 of different hardness, ensuring stable advancement in various working conditions. Further, the push block 342 is provided with a second connecting shaft 370, and the two ends of the second connecting shaft 370 are connected with the connecting part 3411 of the guide part 341, respectively.

[0052] Further, the inner side of the bracket 100 is provided with a first support plate 110, and the two sides of the guide part 341 are located on the first support plate 110. The guide part 341 can move back and forth along the extension direction of the first support plate 110.

[0053] The first support plate 110 supports the guide part 341, and at the same time, the movement direction of the guide part 341 is limited by the first support plate 110, so that the overall structure is more stable and reliable, and the glue stick 400 can always move along its axial direction. Optionally, the first support plate 110 is a rectangular plate structure. Further, the connecting part 3411 of the guide part 341 is located on the first support plate 110.

[0054] Further, the bracket 100 is connected with a first connecting shaft 360, the first transmission shaft 320 and the first connecting shaft 360 are hinged, and one end of the first elastic member 350 away from the pushing assembly 340 is connected with the first connecting shaft 360.

[0055] Optionally, the inner side of the bracket 100 is provided with a plug-in part, and the first connecting shaft 360 and the plug-in part are plugged in. By connecting the first connecting shaft 360 and the first elastic member 350 with the first connecting shaft 360, the components inside the bracket 100 are compact, which is beneficial to realize the miniaturization of the hot melt glue gun. In this embodiment, the first connecting shaft 360 and the bracket 100 are connected through the plug-in part, and the first connecting shaft 360 and the bracket 100 are separate, and in other embodiments, the first connecting shaft 360 and the bracket 100 can be integrally formed. Optionally, the end of the first transmission shaft 320 connected with the first connecting shaft 360 is bent into a ring structure, and the ring structure is sleeved on the first connecting shaft 360, so as to realize the hinge connection of the first transmission shaft 320 and the first connecting shaft 360. Optionally, the first connecting shaft 360 can be a tension spring.

[0056] Further, the first connecting shaft 360 is sleeved with a spacer 380, and the first elastic member 350 and the first transmission shaft 320 are located on the two sides of the spacer 380, respectively.

[0057] By arranging the spacer 380 between the first elastic member 350 and the annular structure of the first connecting shaft 360, the first elastic member 350 and the annular structure can be effectively prevented from approaching each other, thereby avoiding mutual interference between the first elastic member 350 and the annular structure. Optionally, the spacer 380 can be made of metal materials such as stainless steel or copper alloy, or made of engineering plastic materials such as polytetrafluoroethylene.

[0058] Further, the first elastic member 350 is provided with a first connecting ring 351 and a second connecting ring 352, the first connecting ring 351 is sleeved on the first connecting shaft 360, and the side of the guide member 341 facing the first elastic member 350 is provided with a connecting portion 3411, and the second connecting ring 352 is sleeved on the connecting portion 3411.

[0059] By forming the first connecting ring 351 at the end of the first elastic member 350, the first elastic member 350 and the first connecting ring 351 can be conveniently connected. Of course, in other embodiments, the first elastic member 350 can be welded with the first connecting shaft 360, or fixed through other connecting portions 3411. By arranging the curved portion 3413 on the guide member 341, and arranging the second connecting ring 352 at the end of the first elastic member 350, the connection between the guide member 341 and the first elastic member 350 can be facilitated. Optionally, the curved portion 3413 has an L-shaped cross section in the horizontal direction, so that the second connecting ring 352 can be sleeved on the curved portion 3413, and the second connecting ring 352 is prevented from falling off the curved portion 3413.

[0060] Further, the bottom of the driving button 200 is provided with a second elastic member 700, the support 100 is provided with a second support plate 120, the bottom of the second elastic member 700 abuts against the second support plate 120, and the top of the second elastic member 700 abuts against the bottom of the driving button 200.

[0061] It can be understood that the second elastic member 700 is arranged at the bottom of the driving button 200, which ensures that the driving button 200 can be quickly and accurately reset after being released. When the operator releases the driving button 200, the second elastic member 700 drives the driving button 200 to rebound through its elastic restoring force, and drives the first transmission shaft 320, the second transmission shaft 330 and the pushing assembly 340 to return to the initial position, completing a complete motion cycle.

[0062] In this embodiment, two second elastic members 700 are arranged, and the two second elastic members 700 are respectively located on both sides of the connecting member 310. The symmetrical design of the two second elastic members 700 has three advantages: first, the synchronous force on both sides can completely eliminate the unbalanced load jamming phenomenon caused by the single second elastic member 700; second, the double elastic force significantly improves the reset speed; and third, the symmetrical structure enables the driving button 200 to maintain reset accuracy after long-term use.

[0063] Figure 5 The structure diagram of the driving button is shown schematically according to the embodiment of the present application. Referring to Figure 5 In terms of structural details, the driving button 200 is internally provided with a cavity 220, which can simultaneously accommodate the second elastic member 700 and the connecting member 310. The top of the cavity 220 is designed with a positioning protrusion 230, which forms an interference fit with the top inner diameter of the second elastic member 700, preventing radial deviation during operation. Correspondingly, the second support plate 120 is provided with a positioning groove 121, and the bottom of the second elastic member 700 is inserted into the positioning groove 121. Of course, in other embodiments, a protrusion structure can also be provided on the second support plate 120, and the bottom of the second elastic member 700 is sleeved on the protrusion structure, thereby achieving positioning. Further, the present embodiment preferably uses a stainless steel compression spring as the second elastic member 700.

[0064] Further, the bottom of the driving button 200 is provided with a clamping portion 210, which includes two oppositely arranged protrusions, and the connecting member 310 is located between the two protrusions and can move relative to the protrusions.

[0065] In the present scheme, the bottom of the driving button 200 is provided with a clamping portion 210, which is composed of two oppositely arranged protrusions, forming a precise guide slot, so that the connecting member 310 can stably slide between the two protrusions. This design not only realizes effective connection of the connecting member 310, but also provides precise axial guiding function, ensuring that the connecting member 310 does not deviate or jam during movement. To further enhance the stability of the structure, the width of the protrusions can be increased to increase the contact area, thereby significantly reducing the unit area pressure. Additional clamping portions 210 can also be added, using the way of multiple groups of protrusions arranged in parallel, so that the stress distribution is more uniform. In the anti-falling design, the bottom of each protrusion is also processed with a convex rib structure, which forms a mechanical interlock with the edge of the connecting member 310. The cross section of the convex rib is designed in a trapezoidal shape, which not only ensures smooth sliding during assembly, but also forms a self-locking effect in the working state.

[0066] The working principle of the glue outlet structure of the hot melt glue gun in the present embodiment is as follows:

[0067] When the user presses the drive button 200, the drive button 200 moves axially along the mounting hole, driving the first transmission shaft 320 and the second transmission shaft 330 to move together. The first transmission shaft 320 rotates around the second end as the fulcrum, and at the same time, the first end pushes the connecting piece 310 to move towards the glue outlet. In this process, the second transmission shaft 330 synchronously drives the push block 342 to move forward, and the convex teeth of the push block 342 press on the glue stick 400, and the glue stick 400 is stably conveyed to the heating cavity. At the same time, the first elastic member 350 is stretched due to the displacement of the guide piece 341, and the second elastic member 700 is compressed due to being pressed, storing elastic potential energy. After the glue stick 400 is heated and melted, the molten glue is uniformly extruded from the nozzle under the action of continuous pressure, ensuring the continuity and consistency of the glue joint.

[0068] When the user releases the drive button 200, the system enters the reset stage. At this time, the first elastic member 350 and the second elastic member 700 release the stored potential energy. The first elastic member 350 quickly pulls the guide piece 341 back to the initial position, and the reverse movement of the guide piece 341 drives the first transmission shaft 320, the second transmission shaft 330 and the push block 342 to reset, and at the same time, the elastic restoring force of the second elastic member 700, the drive button 200 returns to the standby trigger state, completing a complete working cycle.

[0069] The technical scheme also provides a hot melt glue gun, comprising the glue outlet structure of the hot melt glue gun.

[0070] The above only describes the preferred embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A glue discharging structure of a hot melt glue gun, characterized in that, The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction.

2. The glue discharging structure of the hot melt glue gun according to claim 1, wherein, The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction.

3. The glue discharging structure of the hot melt glue gun according to claim 2, characterized in that, The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction.

4. The glue discharging structure of the hot melt glue gun according to claim 2, characterized in that, The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction.

5. The glue discharging structure of the hot melt glue gun according to claim 4, characterized in that, The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction.

6. The glue discharging structure of the hot melt glue gun according to claim 4, characterized in that, The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. 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The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) is pressed, and the transmission structure (300) drives the glue stick (400) to move to the glue direction. The utility model relates to a drive button (200) and a transmission structure (300) are arranged on the bracket (100), the drive button (200) 7. The glue discharging structure of the hot melt glue gun according to any one of claims 1-6, characterized in that, The bottom of the driving button (200) is provided with a second elastic member (700), the support (100) is provided with a second support plate (120), the bottom of the second elastic member (700) and the second support plate (120) are in abutment, and the top of the second elastic member (700) and the bottom of the driving button (200) are in abutment.

8. The glue discharging structure of the hot melt glue gun according to any one of claims 1-6, characterized in that, The bottom of the driving button (200) is provided with a clamping portion (210), the clamping portion (210) comprises two protrusions arranged oppositely, and the connecting member (310) is located between the two protrusions and can move relative to the protrusions.

9. The glue discharging structure of the hot melt glue gun according to any one of claims 1-6, characterized in that, The glue discharging structure of the hot melt glue gun further comprises a shell (600), the support (100) and the transmission structure (300) are arranged inside the shell (600), the driving button (200) is pressingly arranged in the shell (600), the shell (600) is provided with a battery compartment (130), one end of the shell (600) is provided with a glue stick insertion opening (610) and an opening of the battery compartment (130), the other end of the shell (600) is provided with a glue stick outlet (630), and the glue stick outlet (630) is on the same straight line as the center line of the glue stick insertion opening (610) or the opening of the battery compartment (130).

10. A hot melt glue gun characterized by, The glue discharging structure of the hot melt glue gun comprises the hot melt glue gun according to any one of claims 1-9. The bottom of the driving button (200) is provided with a second elastic member (700), the support (100) is provided with a second support plate (120), the bottom of the second elastic member (700) and the second support plate (120) are in abutment, and the top of the second elastic member (700) and the bottom of the driving button (200) are in abutment. The bottom of the driving button (200) is provided with a clamping portion (210), the clamping portion (210) comprises two protrusions arranged oppositely, and the connecting member (310) is located between the two protrusions and can move relative to the protrusions. The glue discharging structure of the hot melt glue gun further comprises a shell (600), the support (100) and the transmission structure (300) are arranged inside the shell (600), the driving button (200) is pressingly arranged in the shell (600), the shell (600) is provided with a battery compartment (130), one end of the shell (600) is provided with a glue stick insertion opening (610) and an opening of the battery compartment (130), the other end of the shell (600) is provided with a glue stick outlet (630), and the glue stick outlet (630) is on the same straight line as the center line of the glue stick insertion opening (610) or the opening of the battery compartment (130). The glue discharging structure of the hot melt glue gun comprises the hot melt glue gun according to any one of claims 1-9.

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